body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background-color: #f7f7f7;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    animation: colorChange 30s infinite alternate;
}

@keyframes colorChange {
    0% { background-color: #ff9999; }
    50% { background-color: #ffffff; }
    100% { background-color: #ff9999; }
}

.timer {
    font-size: 48px;
    margin: 20px 0;
}

.controls button {
    margin: 5px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s, transform 0.3s;
}

.controls button:hover {
    background-color: #ddd;
}

.controls button:active {
    transform: scale(0.95);
}

.settings {
    margin-top: 20px;
}

.settings label {
    margin-right: 10px;
}

.session-info {
    margin-top: 20px;
    font-size: 18px;
} 